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Alaskagwagen
Date registered: Dec 1899
Location:
Vehicle(s):
| Low Sulphur Diesel
I am wondering what you diesel heads out there are doing about the low sulphur diesel issue. It just showed up at the pumps up here in Alaska and I have had a few discussions with my mechanic about it - his concern is that the decreased lubricity of the fuel will lead to premature IP failure. I wonder if our European freinds have any experience with the low sulphur diesel (15 ppm sulphur) and the Bosch IP seals? My understanding is that mixing 5-10% biodiesel will restore the lubricity. I make biodiesel but don't run it in the winter up here due to the gel point/wax issue. A friend with a VW TDI says his pump is lubricated with engine oil so it is not an issue for him. How about our 617s and 603s? Maybe its time to add some kerosene in the winter?
Adam
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BenzDieselTuner
Date registered: Dec 1899
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| Re: Low Sulphur Diesel
well, the diesel we buy in Heilbronn is SULPHUR FREE, not just low sulphur..........so far the green machine has run a few hundred thousand kilometers without any troubles.........but we run biodiesel in her most of the time..... |
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Dieselburns
Expert
Date registered: May 2006
Location: New York, Long Island
Vehicle(s): 78' MB 300D 87 Chief Cherokee
Posts: 2251
| Re: Low Sulphur Diesel
Yea that's what I put in my tank now! Since its cold now over here in NY I can't run my car on veggie oil! Oh well I wish I live in Florida! |
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AlanMcR
Expert
Date registered: Apr 2006
Location: US, CA, Los Altos
Vehicle(s): G300DT E300DT 230SL
Posts: 3500
| RE: Low Sulphur Diesel
Adam,
I believe that the inline Bosch IPs are also lubricated by engine oil. Only the pressure piston and sleeve are exposed to the fuel. These are very hard parts that have been lapped together. Very little chance for wear there unless water gets involved. |
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Alaskagwagen
Date registered: Dec 1899
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| RE: Low Sulphur Diesel
Alan, This is what I was hoping. I will dig out my books and try to confirm that this is the case.
Adam |
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dai
Expert
Date registered: Apr 2006
Location: Oregon USA
Vehicle(s): 300GD 300TD BMW R100RS Landini 80F
Posts: 2110
| Re: Low Sulphur Diesel
I think it is important to have some lube in the fuel to address this issue. If you run SVO or biodiesel then the pistons and bores in the pump are lubed. So if you are running diesel then a bit of vegetable oil or bio-D might be the answer. I have been running Redline Diesel Fuel Catalyst for years. It is MB approved and I bought it at the Newport Beach MB dealer in the early '80s. I think it works very well and one container (around 12 0z) provides lubrication for 100 gallons of diesel. There are those that use Marvel Mystery Oil and Automatic Transmission fluid with every tank. I think a bit of Canola might do the same thing and will smell more interesting out the tailpipe.
-Dai |
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Alaskagwagen
Date registered: Dec 1899
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| Re: Low Sulphur Diesel
Dai,
I think in the interest of being safe, your suggestion is excellent. Up here I think I should use some salmon oil 
Adam |
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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| It's Really Ultra Low Sulphur Diesel
Alaskagwagen - 10/25/2006 1:36 AM
I wonder if our European freinds have any experience with the low sulphur diesel (15 ppm sulphur)
Adam
Low Sulfur Diesel (500 ppm Sulfur) is what you've been using for a long time. It's Ultra Low Sulfur Diesel (ULSD) at 15 ppm you're asking about.
Sematics.  |
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Alaskagwagen
Date registered: Dec 1899
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| RE: It's Really Ultra Low Sulphur Diesel
Thanks Dutch! Semantics may seem trivial but in this case 500ppm vs 15ppm sulphur is pretty significant. So Ultra Low Sulphur Diesel (ULSD) it is.
Here is a blurb on the lubricity issue form Wikipedia:
"Sulfur is not a lubricant, however the process used to reduce the Sulfur also reduces the fuel's lubricating properties. Lubricity is a measure of the fuel's ability to lubricate and protect the various parts of the engine's fuel injection system from wear. The processing required to reduce sulfur to 15 ppm also removes naturally-occurring lubricity agents in diesel fuel. To manage this change the American Society for Testing and Materials (ASTM) adopted the lubricity specification defined in ASTM D975 for all diesel fuels and this standard went into effect January 1, 2005. [3]
There may also be a minor decrease in the energy content, by about 1%. This decrease in energy content may result in reduced fuel economy. To achieve the sulfur requirements for the new fuel standards, diesel manufacturers include an additive to keep the fuel flowing smoothly, and to prevent engine damage. A relatively cheap lubricious additive is biodiesel.
ULSD will run in any engine designed for the ASTM D-975 diesel fuels."
By 2010 only ULSD will be avaialble. RIght now Marine, locomotives and off-road equipment can continue to run LSD.
The EPA says ULSD can only be mixed with ULS Kerosene for winter use and that lubricity additives will be added before retail sale if necessary. THat is the part that worries me. Best do do like Dai says and add your own to make sure.
THis ULSD is the stuff Europe has been using for some time so they should have it down.
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BenzDieselTuner
Date registered: Dec 1899
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| Re: Low Sulphur Diesel
when it gets too cold for WVO ill start using ULSD with PowerService additive..... |
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